Null Pointer Exception for Stormy App when I press 7 Day Button

     @Override
     protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_daily_forecast);

          Intent intent = getIntent();
          Parcelable[] parcelables = intent.getParcelableArrayExtra(MainActivity.DAILY_FORECAST);
          mDays = Arrays.copyOf(parcelables, parcelables.length, Day[].class);

          DayAdapter adapter = new DayAdapter(this, mDays);
     }

     package teamtreehouse.com.stormy.ui;

     import android.content.Context;
     import android.content.Intent;
     import android.graphics.drawable.Drawable;
     import android.net.ConnectivityManager;
     import android.net.NetworkInfo;
     import android.os.Bundle;
     import android.support.v7.app.ActionBarActivity;
     import android.util.Log;
     import android.view.View;
     import android.widget.ImageView;
     import android.widget.ProgressBar;
     import android.widget.TextView;
     import android.widget.Toast;

     import com.squareup.okhttp.Call;
     import com.squareup.okhttp.Callback;
     import com.squareup.okhttp.OkHttpClient;
     import com.squareup.okhttp.Request;
     import com.squareup.okhttp.Response;

     import org.json.JSONException;
     import org.json.JSONObject;

     import java.io.IOException;

     import butterknife.ButterKnife;
     import butterknife.InjectView;
     import butterknife.OnClick;
     import teamtreehouse.com.stormy.R;
     import teamtreehouse.com.stormy.weather.Current;
     import teamtreehouse.com.stormy.weather.Forecast;


     public class MainActivity extends ActionBarActivity {

         public static final String TAG = MainActivity.class.getSimpleName();
         public static final String DAILY_FORECAST = "DAILY FORECAST";

    private Forecast mForecast;
    private Current mCurrent;

    @InjectView(R.id.timeLabel) TextView mTimeLabel;
    @InjectView(R.id.temperatureLabel) TextView mTemperatureLabel;
    @InjectView(R.id.humidityValue) TextView mHumidityValue;
    @InjectView(R.id.precipValue) TextView mPrecipValue;
    @InjectView(R.id.summaryLabel) TextView mSummaryLabel;
    @InjectView(R.id.iconImageView) ImageView mIconImageView;
    @InjectView(R.id.refreshImageView) ImageView mRefreshImageView;
    @InjectView(R.id.progressBar) ProgressBar mProgressBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.inject(this);

        mProgressBar.setVisibility(View.INVISIBLE);

        final double latitude = 37.8267;
        final double longitude = -122.423;

        mRefreshImageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getForecast(latitude, longitude);
            }
        });

        getForecast(latitude, longitude);

        Log.d(TAG, "Main UI code is running!");
    }

    private void getForecast(double latitude, double longitude) {
        String apiKey = "27974c4bc33201748eaf542a6769c3b7";
        String forecastUrl = "https://api.forecast.io/forecast/" + apiKey +
                "/" + latitude + "," + longitude;

        if (isNetworkAvailable()) {
            toggleRefresh();

            OkHttpClient client = new OkHttpClient();
            Request request = new Request.Builder()
                    .url(forecastUrl)
                    .build();

            Call call = client.newCall(request);
            call.enqueue(new Callback() {
                @Override
                public void onFailure(Request request, IOException e) {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            toggleRefresh();
                        }
                    });
                    alertUserAboutError();
                }

                @Override
                public void onResponse(Response response) throws IOException {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            toggleRefresh();
                        }
                    });

                    try {
                        String jsonData = response.body().string();
                        Log.v(TAG, jsonData);
                        if (response.isSuccessful()) {
                            mCurrent = getCurrentDetails(jsonData);
                            runOnUiThread(new Runnable() {
                                @Override
                                public void run() {
                                    updateDisplay();
                                }
                            });
                        } else {
                            alertUserAboutError();
                        }
                    }
                    catch (IOException e) {
                        Log.e(TAG, "Exception caught: ", e);
                    }
                    catch (JSONException e) {
                        Log.e(TAG, "Exception caught: ", e);
                    }
                }
            });
        }
        else {
            Toast.makeText(this, getString(R.string.network_unavailable_message),
                    Toast.LENGTH_LONG).show();
        }
    }

    private void toggleRefresh() {
        if (mProgressBar.getVisibility() == View.INVISIBLE) {
            mProgressBar.setVisibility(View.VISIBLE);
            mRefreshImageView.setVisibility(View.INVISIBLE);
        }
        else {
            mProgressBar.setVisibility(View.INVISIBLE);
            mRefreshImageView.setVisibility(View.VISIBLE);
        }
    }

    private void updateDisplay() {
        mTemperatureLabel.setText(mCurrent.getTemperature() + "");
        mTimeLabel.setText("At " + mCurrent.getFormattedTime() + " it will be");
        mHumidityValue.setText(mCurrent.getHumidity() + "");
        mPrecipValue.setText(mCurrent.getPrecipChance() + "%");
        mSummaryLabel.setText(mCurrent.getSummary());

        Drawable drawable = getResources().getDrawable(mCurrent.getIconId());
        mIconImageView.setImageDrawable(drawable);
    }

    private Current getCurrentDetails(String jsonData) throws JSONException {
        JSONObject forecast = new JSONObject(jsonData);
        String timezone = forecast.getString("timezone");
        Log.i(TAG, "From JSON: " + timezone);

        JSONObject currently = forecast.getJSONObject("currently");

        Current current = new Current();
        current.setHumidity(currently.getDouble("humidity"));
        current.setTime(currently.getLong("time"));
        current.setIcon(currently.getString("icon"));
        current.setPrecipChance(currently.getDouble("precipProbability"));
        current.setSummary(currently.getString("summary"));
        current.setTemperature(currently.getDouble("temperature"));
        current.setTimeZone(timezone);

        Log.d(TAG, current.getFormattedTime());

        return current;
    }


    private boolean isNetworkAvailable() {
        ConnectivityManager manager = (ConnectivityManager)
                getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager.getActiveNetworkInfo();
        boolean isAvailable = false;
        if (networkInfo != null && networkInfo.isConnected()) {
            isAvailable = true;
        }

        return isAvailable;
    }

    private void alertUserAboutError() {
        AlertDialogFragment dialog = new AlertDialogFragment();
        dialog.show(getFragmentManager(), "error_dialog");
    }

    @OnClick(R.id.dailyButton)
    public void startDailyActivity(View view){
        Intent intent = new Intent(this, DailyForecastActivity.class);
        intent.putExtra(DAILY_FORECAST, mForecast.getDailyForeCast());
        startActivity(intent);

         }
     }

     package teamtreehouse.com.stormy.ui;

     import android.app.ListActivity;
     import android.content.Intent;
     import android.os.Bundle;
     import android.os.Parcelable;

     import java.util.Arrays;

     import teamtreehouse.com.stormy.R;
     import teamtreehouse.com.stormy.adapters.DayAdapter;
     import teamtreehouse.com.stormy.weather.Day;

     public class DailyForecastActivity extends ListActivity {

         private Day[] mDays;

         @Override
         protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.activity_daily_forecast);

             Intent intent = getIntent();
             Parcelable[] parcelables = intent.getParcelableArrayExtra(MainActivity.DAILY_FORECAST);
             mDays = Arrays.copyOf(parcelables, parcelables.length, Day[].class);

             DayAdapter adapter = new DayAdapter(this, mDays);
         }
     }